<!DOCTYPE html>



  


<html class="theme-next mist use-motion" lang="zh-Hans">
<head><meta name="generator" content="Hexo 3.8.0">
  <meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
<meta name="theme-color" content="#222">



  
  
    
    
  <script src="/lib/pace/pace.min.js?v=1.0.2"></script>
  <link href="/lib/pace/pace-theme-minimal.min.css?v=1.0.2" rel="stylesheet">







<meta http-equiv="Cache-Control" content="no-transform">
<meta http-equiv="Cache-Control" content="no-siteapp">
















  
  
  <link href="/lib/fancybox/source/jquery.fancybox.css?v=2.1.5" rel="stylesheet" type="text/css">







<link href="/lib/font-awesome/css/font-awesome.min.css?v=4.6.2" rel="stylesheet" type="text/css">

<link href="/css/main.css?v=5.1.4" rel="stylesheet" type="text/css">


  <link rel="apple-touch-icon" sizes="180x180" href="/images/favicon.ico?v=5.1.4">


  <link rel="icon" type="image/png" sizes="32x32" href="/images/favicon-32x32-next.ico?v=5.1.4">


  <link rel="icon" type="image/png" sizes="16x16" href="/images/favicon-16x16-next.ico?v=5.1.4">


  <link rel="mask-icon" href="/images/facicon.ico?v=5.1.4" color="#222">





  <meta name="keywords" content="Java Android,">





  <link rel="alternate" href="/atom.xml" title="Key" type="application/atom+xml">






<meta name="description" content="活动是什么活动（Activity）是一种可以包含用户界面的组件，主要用于和用户进行交互。一个应用程序中可以包含零个或多个活动，但不包含任何活动的应用程序很少见。 活动的基本用法活动的创建项目中的任何活动都应该重写Activity中的Activity的onCreate()方法，如下： 1234567public class MainActivity extends AppCompatActivity">
<meta name="keywords" content="Java Android">
<meta property="og:type" content="article">
<meta property="og:title" content="Android中活动（Activity）中的基本用法">
<meta property="og:url" content="https://blog.qipo.net/2019/05/04/activityBasic/index.html">
<meta property="og:site_name" content="Key">
<meta property="og:description" content="活动是什么活动（Activity）是一种可以包含用户界面的组件，主要用于和用户进行交互。一个应用程序中可以包含零个或多个活动，但不包含任何活动的应用程序很少见。 活动的基本用法活动的创建项目中的任何活动都应该重写Activity中的Activity的onCreate()方法，如下： 1234567public class MainActivity extends AppCompatActivity">
<meta property="og:locale" content="zh-Hans">
<meta property="og:updated_time" content="2020-06-03T02:37:45.341Z">
<meta name="twitter:card" content="summary">
<meta name="twitter:title" content="Android中活动（Activity）中的基本用法">
<meta name="twitter:description" content="活动是什么活动（Activity）是一种可以包含用户界面的组件，主要用于和用户进行交互。一个应用程序中可以包含零个或多个活动，但不包含任何活动的应用程序很少见。 活动的基本用法活动的创建项目中的任何活动都应该重写Activity中的Activity的onCreate()方法，如下： 1234567public class MainActivity extends AppCompatActivity">



<script type="text/javascript" id="hexo.configurations">
  var NexT = window.NexT || {};
  var CONFIG = {
    root: '/',
    scheme: 'Mist',
    version: '5.1.4',
    sidebar: {"position":"left","display":"post","offset":12,"b2t":false,"scrollpercent":false,"onmobile":false},
    fancybox: true,
    tabs: true,
    motion: {"enable":true,"async":false,"transition":{"post_block":"fadeIn","post_header":"slideDownIn","post_body":"slideDownIn","coll_header":"slideLeftIn","sidebar":"slideUpIn"}},
    duoshuo: {
      userId: '0',
      author: '博主'
    },
    algolia: {
      applicationID: '',
      apiKey: '',
      indexName: '',
      hits: {"per_page":10},
      labels: {"input_placeholder":"Search for Posts","hits_empty":"We didn't find any results for the search: ${query}","hits_stats":"${hits} results found in ${time} ms"}
    }
  };
</script>



  <link rel="canonical" href="https://blog.qipo.net/2019/05/04/activityBasic/">





  <title>Android中活动（Activity）中的基本用法 | Key</title>
  








</head>

<body itemscope itemtype="http://schema.org/WebPage" lang="zh-Hans">

  
  
    
  

  <div class="container sidebar-position-left page-post-detail">
    <div class="headband"></div>

    <header id="header" class="header" itemscope itemtype="http://schema.org/WPHeader">
      <div class="header-inner"><div class="site-brand-wrapper">
  <div class="site-meta ">
    

    <div class="custom-logo-site-title">
      <a href="/" class="brand" rel="start">
        <span class="logo-line-before"><i></i></span>
        <span class="site-title">Key</span>
        <span class="logo-line-after"><i></i></span>
      </a>
    </div>
      
        <h1 class="site-subtitle" itemprop="description"></h1>
      
  </div>

  <div class="site-nav-toggle">
    <button>
      <span class="btn-bar"></span>
      <span class="btn-bar"></span>
      <span class="btn-bar"></span>
    </button>
  </div>
</div>

<nav class="site-nav">
  

  
    <ul id="menu" class="menu">
      
        
        <li class="menu-item menu-item-home">
          <a href="/" rel="section">
            
              <i class="menu-item-icon fa fa-fw fa-home"></i> <br>
            
            首页
          </a>
        </li>
      
        
        <li class="menu-item menu-item-about">
          <a href="/about/" rel="section">
            
              <i class="menu-item-icon fa fa-fw fa-user"></i> <br>
            
            关于
          </a>
        </li>
      
        
        <li class="menu-item menu-item-tags">
          <a href="/tags/" rel="section">
            
              <i class="menu-item-icon fa fa-fw fa-tags"></i> <br>
            
            标签
          </a>
        </li>
      
        
        <li class="menu-item menu-item-categories">
          <a href="/categories/" rel="section">
            
              <i class="menu-item-icon fa fa-fw fa-th"></i> <br>
            
            分类
          </a>
        </li>
      
        
        <li class="menu-item menu-item-archives">
          <a href="/archives/" rel="section">
            
              <i class="menu-item-icon fa fa-fw fa-archive"></i> <br>
            
            归档
          </a>
        </li>
      

      
    </ul>
  

  
</nav>



 </div>
    </header>

    <main id="main" class="main">
      <div class="main-inner">
        <div class="content-wrap">
          <div id="content" class="content">
            

  <div id="posts" class="posts-expand">
    

  

  
  
  

  <article class="post post-type-normal" itemscope itemtype="http://schema.org/Article">
  
  
  
  <div class="post-block">
    <link itemprop="mainEntityOfPage" href="https://blog.qipo.net/2019/05/04/activityBasic/">

    <span hidden itemprop="author" itemscope itemtype="http://schema.org/Person">
      <meta itemprop="name" content="Key">
      <meta itemprop="description" content>
      <meta itemprop="image" content="/images/avatar.jpg">
    </span>

    <span hidden itemprop="publisher" itemscope itemtype="http://schema.org/Organization">
      <meta itemprop="name" content="Key">
    </span>

    
      <header class="post-header">

        
        
          <h2 class="post-title" itemprop="name headline">Android中活动（Activity）中的基本用法</h2>
        

        <div class="post-meta">
          <span class="post-time">
            
              <span class="post-meta-item-icon">
                <i class="fa fa-calendar-o"></i>
              </span>
              
                <span class="post-meta-item-text">发表于</span>
              
              <time title="创建于" itemprop="dateCreated datePublished" datetime="2019-05-04T20:47:38+08:00">
                2019-05-04
              </time>
            

            

            
          </span>

          
            <span class="post-category">
            
              <span class="post-meta-divider">|</span>
            
              <span class="post-meta-item-icon">
                <i class="fa fa-folder-o"></i>
              </span>
              
                <span class="post-meta-item-text">分类于</span>
              
              
                <span itemprop="about" itemscope itemtype="http://schema.org/Thing">
                  <a href="/categories/Android/" itemprop="url" rel="index">
                    <span itemprop="name">Android</span>
                  </a>
                </span>

                
                
              
            </span>
          

          
            
          

          
          

          

          
            <div class="post-wordcount">
              
                
                <span class="post-meta-item-icon">
                  <i class="fa fa-file-word-o"></i>
                </span>
                
                  <span class="post-meta-item-text">字数统计&#58;</span>
                
                <span title="字数统计">
                  1k
                </span>
              

              
                <span class="post-meta-divider">|</span>
              

              
                <span class="post-meta-item-icon">
                  <i class="fa fa-clock-o"></i>
                </span>
                
                  <span class="post-meta-item-text">阅读时长 &asymp;</span>
                
                <span title="阅读时长">
                  4
                </span>
              
            </div>
          

          

        </div>
      </header>
    

    
    
    
    <div class="post-body" itemprop="articleBody">

      
      

      
        <h1 id="活动是什么"><a href="#活动是什么" class="headerlink" title="活动是什么"></a>活动是什么</h1><p>活动（Activity）是一种可以包含用户界面的组件，主要用于和用户进行交互。一个应用程序中可以包含零个或多个活动，但不包含任何活动的应用程序很少见。</p>
<h1 id="活动的基本用法"><a href="#活动的基本用法" class="headerlink" title="活动的基本用法"></a>活动的基本用法</h1><h2 id="活动的创建"><a href="#活动的创建" class="headerlink" title="活动的创建"></a>活动的创建</h2><p>项目中的任何活动都应该重写Activity中的Activity的onCreate()方法，如下：</p>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="class"><span class="keyword">class</span> <span class="title">MainActivity</span> <span class="keyword">extends</span> <span class="title">AppCompatActivity</span> </span>&#123;</span><br><span class="line">        </span><br><span class="line">    <span class="meta">@Override</span></span><br><span class="line">    <span class="function"><span class="keyword">protected</span> <span class="keyword">void</span> <span class="title">onCreate</span><span class="params">(Bundle savedInstanceState)</span> </span>&#123;</span><br><span class="line">       <span class="keyword">super</span>.onCreate(savedInstanceState);</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
<p>可以看到，onCreate()方法非常简单，就是调用了父类的onCreate()方法。当然这只是默认的实现，后面我们还需要在里面加入很多自己的逻辑。</p>
<h2 id="创建和加载布局"><a href="#创建和加载布局" class="headerlink" title="创建和加载布局"></a>创建和加载布局</h2><p>Android程序的设计讲究逻辑和视图分离，最好每一个活动都能对应一个布局，布局就是用来显示界面的内容的，因此我们来手动创建一个布局文件。</p>
<p>在res文件夹下创建或者打开layout文件夹，然后创建一个<code>first_layout.xml</code>的文件，在该文件中输入以下代码：</p>
<figure class="highlight xml"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br></pre></td><td class="code"><pre><span class="line"></span><br><span class="line"><span class="comment">&lt;!-- </span></span><br><span class="line"><span class="comment">    LinearLayout:线性布局，可以视为html中的div，用于对于整个界面进行布局</span></span><br><span class="line"><span class="comment">    </span></span><br><span class="line"><span class="comment">    xmlns:andorid:指定的是xml文件的命名空间，不是对布局的主要设置，但是要有</span></span><br><span class="line"><span class="comment">    </span></span><br><span class="line"><span class="comment">    android:layout_width="match_parent"指的是当前的线性布局宽度占整个父元素，这里相对于</span></span><br><span class="line"><span class="comment">    当前的线性布局父元素为当前的窗体,所以宽度占满窗体</span></span><br><span class="line"><span class="comment">    </span></span><br><span class="line"><span class="comment">    android:layout_height="match_parent"指的是当前的线性布局高度占整个父元素，这里相对于</span></span><br><span class="line"><span class="comment">    当前的线性布局父元素为当前的窗体,所以高度占满窗体</span></span><br><span class="line"><span class="comment">   </span></span><br><span class="line"><span class="comment">    android:orientation="vertical":指的是当前控件为垂直摆放</span></span><br><span class="line"><span class="comment">    </span></span><br><span class="line"><span class="comment">    android:orientation 值:horizontal 元素水平摆放  |  vertical 元素垂直摆放</span></span><br><span class="line"><span class="comment">--&gt;</span></span><br><span class="line"><span class="php"><span class="meta">&lt;?</span>xml version=<span class="string">"1.0"</span> encoding=<span class="string">"utf-8"</span><span class="meta">?&gt;</span></span></span><br><span class="line"><span class="tag">&lt;<span class="name">LinearLayout</span> <span class="attr">xmlns:android</span>=<span class="string">"http://schemas.android.com/apk/res/android"</span></span></span><br><span class="line"><span class="tag">    <span class="attr">android:orientation</span>=<span class="string">"vertical"</span> <span class="attr">android:layout_width</span>=<span class="string">"match_parent"</span></span></span><br><span class="line"><span class="tag">    <span class="attr">android:layout_height</span>=<span class="string">"match_parent"</span>&gt;</span></span><br><span class="line"></span><br><span class="line">    <span class="comment">&lt;!--</span></span><br><span class="line"><span class="comment">        这里添加了一个Button元素，并在Button元素的内部增加了几个属性：</span></span><br><span class="line"><span class="comment">        android:id 这个是为当前元素定义了一个唯一标识符，之后可以在代码中对这个元素进行操作。</span></span><br><span class="line"><span class="comment">        @id+id/button_1 定义了一个id</span></span><br><span class="line"><span class="comment">        android:layout_width="match_parent" 表示当前元素的宽度和父元素一样宽。 </span></span><br><span class="line"><span class="comment">        android:layout_height="wrap_content" 表示当前元素的高度只能刚好包含里面的内容就行</span></span><br><span class="line"><span class="comment">        android:text="按钮" 指定了元素中显示的文字内容</span></span><br><span class="line"><span class="comment">    --&gt;</span></span><br><span class="line">    <span class="tag">&lt;<span class="name">Button</span></span></span><br><span class="line"><span class="tag">        <span class="attr">android:id</span>=<span class="string">"@+id/button_1"</span></span></span><br><span class="line"><span class="tag">        <span class="attr">android:layout_width</span>=<span class="string">"wrap_content"</span></span></span><br><span class="line"><span class="tag">        <span class="attr">android:layout_height</span>=<span class="string">"wrap_content"</span></span></span><br><span class="line"><span class="tag">        <span class="attr">android:text</span>=<span class="string">"按钮"</span>/&gt;</span></span><br><span class="line"><span class="tag">&lt;/<span class="name">LinearLayout</span>&gt;</span></span><br></pre></td></tr></table></figure>
<p>接下来要做的就是在活动中加载这个布局。</p>
<p>在Activity中的onCreate()方法中加入如下代码：</p>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="class"><span class="keyword">class</span> <span class="title">FirstActivity</span> <span class="keyword">extends</span> <span class="title">AppCompatActivity</span> </span>&#123;</span><br><span class="line">  <span class="meta">@Override</span></span><br><span class="line">  <span class="function"><span class="keyword">protected</span> <span class="keyword">void</span> <span class="title">onCreate</span><span class="params">(Bundle savedInstanceState)</span></span>&#123;</span><br><span class="line">    <span class="keyword">super</span>.onCreate(savedInstanceState);</span><br><span class="line">    <span class="comment">// 这里调用了setContentView()方法来给当前的活动加载了一个布局，而在该方法中我们一般会传入一个布局文件的id，项目添加的任何资源都会在R文件中生成一个相应的资源id。只要调用`R.layout.first_layout`就会得到这个布局文件。</span></span><br><span class="line">    setContentView(R.layout.first_layout);</span><br><span class="line">  &#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
<h2 id="在AndroidMainifest文件中注册"><a href="#在AndroidMainifest文件中注册" class="headerlink" title="在AndroidMainifest文件中注册"></a>在AndroidMainifest文件中注册</h2><p>所有的活动都要在<code>AndroidMainifest.xml</code>中进行注册才能生效。</p>
<figure class="highlight xml"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br></pre></td><td class="code"><pre><span class="line"><span class="php"><span class="meta">&lt;?</span>xml version=<span class="string">"1.0"</span> encoding=<span class="string">"utf-8"</span><span class="meta">?&gt;</span></span></span><br><span class="line"><span class="tag">&lt;<span class="name">manifest</span> <span class="attr">xmlns:android</span>=<span class="string">"http://schemas.android.com/apk/res/android"</span></span></span><br><span class="line"><span class="tag">    <span class="attr">package</span>=<span class="string">"com.example.myapplication"</span>&gt;</span></span><br><span class="line"></span><br><span class="line">    <span class="tag">&lt;<span class="name">application</span></span></span><br><span class="line"><span class="tag">        <span class="attr">android:allowBackup</span>=<span class="string">"true"</span></span></span><br><span class="line"><span class="tag">        <span class="attr">android:icon</span>=<span class="string">"@mipmap/ic_launcher"</span></span></span><br><span class="line"><span class="tag">        <span class="attr">android:label</span>=<span class="string">"@string/app_name"</span></span></span><br><span class="line"><span class="tag">        <span class="attr">android:roundIcon</span>=<span class="string">"@mipmap/ic_launcher_round"</span></span></span><br><span class="line"><span class="tag">        <span class="attr">android:supportsRtl</span>=<span class="string">"true"</span></span></span><br><span class="line"><span class="tag">        <span class="attr">android:theme</span>=<span class="string">"@style/AppTheme"</span>&gt;</span></span><br><span class="line">        <span class="comment">&lt;!--</span></span><br><span class="line"><span class="comment">          android:name=".FirstActivity" 用来指定具体注册的是哪一个活动</span></span><br><span class="line"><span class="comment">          这里的".FirstActivity"是"com.example.myapplication.FirstActivity"的缩写</span></span><br><span class="line"><span class="comment">          </span></span><br><span class="line"><span class="comment">          android:label 指定活动中标题栏的内容，标题栏是显示在活动最顶部的。</span></span><br><span class="line"><span class="comment">          需要注意的是，给主活动指定的label不仅会成为标题栏中的内容，还会成为启动器（Launcher）中应用程序显示的名称</span></span><br><span class="line"><span class="comment">        --&gt;</span></span><br><span class="line">        <span class="tag">&lt;<span class="name">activity</span> <span class="attr">android:name</span>=<span class="string">".FirstActivity"</span></span></span><br><span class="line"><span class="tag">            <span class="attr">android:label</span>=<span class="string">"MyApplication"</span>&gt;</span></span><br><span class="line">            </span><br><span class="line">          <span class="comment">&lt;!-- </span></span><br><span class="line"><span class="comment">            配置主活动    </span></span><br><span class="line"><span class="comment">          --&gt;</span></span><br><span class="line">          <span class="tag">&lt;<span class="name">intent-filter</span>&gt;</span></span><br><span class="line">            <span class="tag">&lt;<span class="name">action</span> <span class="attr">android:name</span>=<span class="string">"android.intent.action.MAIN"</span> /&gt;</span></span><br><span class="line">            <span class="tag">&lt;<span class="name">category</span> <span class="attr">android:name</span>=<span class="string">"android.intent.category.LAUNCHER"</span> /&gt;</span></span><br><span class="line">          <span class="tag">&lt;/<span class="name">intent-filter</span>&gt;</span></span><br><span class="line">        <span class="tag">&lt;/<span class="name">activity</span>&gt;</span></span><br><span class="line">        </span><br><span class="line">    <span class="tag">&lt;/<span class="name">application</span>&gt;</span></span><br><span class="line"></span><br><span class="line"><span class="tag">&lt;/<span class="name">manifest</span>&gt;</span></span><br></pre></td></tr></table></figure>
      
    </div>
    
    
    

    

    
      <div>
        <div style="padding: 10px 0; margin: 20px auto; width: 90%; text-align: center;">
  <div></div>
  <button id="rewardButton" disable="enable" onclick="var qr = document.getElementById('QR'); if (qr.style.display === 'none') {qr.style.display='block';} else {qr.style.display='none'}">
    <span>打赏</span>
  </button>
  <div id="QR" style="display: none;">

    
      <div id="wechat" style="display: inline-block">
        <img id="wechat_qr" src="/images/wechatpay.jpg" alt="Key 微信支付">
        <p>微信支付</p>
      </div>
    

    
      <div id="alipay" style="display: inline-block">
        <img id="alipay_qr" src="/images/alipay.jpg" alt="Key 支付宝">
        <p>支付宝</p>
      </div>
    

    

  </div>
</div>

      </div>
    

    

    <footer class="post-footer">
      
        <div class="post-tags">
          
            <a href="/tags/Java-Android/" rel="tag"># Java Android</a>
          
        </div>
      

      
      
      

      
        <div class="post-nav">
          <div class="post-nav-next post-nav-item">
            
              <a href="/2019/05/02/androidLog/" rel="next" title="Android的日志工具Log">
                <i class="fa fa-chevron-left"></i> Android的日志工具Log
              </a>
            
          </div>

          <span class="post-nav-divider"></span>

          <div class="post-nav-prev post-nav-item">
            
              <a href="/2019/05/17/reflect/" rel="prev" title="Java反射机制">
                Java反射机制 <i class="fa fa-chevron-right"></i>
              </a>
            
          </div>
        </div>
      

      
      
    </footer>
  </div>
  
  
  
  </article>



    <div class="post-spread">
      
    </div>
  </div>


          </div>
          


          

  



        </div>
        
          
  
  <div class="sidebar-toggle">
    <div class="sidebar-toggle-line-wrap">
      <span class="sidebar-toggle-line sidebar-toggle-line-first"></span>
      <span class="sidebar-toggle-line sidebar-toggle-line-middle"></span>
      <span class="sidebar-toggle-line sidebar-toggle-line-last"></span>
    </div>
  </div>

  <aside id="sidebar" class="sidebar">
    
    <div class="sidebar-inner">

      

      
        <ul class="sidebar-nav motion-element">
          <li class="sidebar-nav-toc sidebar-nav-active" data-target="post-toc-wrap">
            文章目录
          </li>
          <li class="sidebar-nav-overview" data-target="site-overview-wrap">
            站点概览
          </li>
        </ul>
      

      <section class="site-overview-wrap sidebar-panel">
        <div class="site-overview">
          <div class="site-author motion-element" itemprop="author" itemscope itemtype="http://schema.org/Person">
            
              <img class="site-author-image" itemprop="image" src="/images/avatar.jpg" alt="Key">
            
              <p class="site-author-name" itemprop="name">Key</p>
              <p class="site-description motion-element" itemprop="description"></p>
          </div>

          <nav class="site-state motion-element">

            
              <div class="site-state-item site-state-posts">
              
                <a href="/archives/">
              
                  <span class="site-state-item-count">107</span>
                  <span class="site-state-item-name">日志</span>
                </a>
              </div>
            

            
              
              
              <div class="site-state-item site-state-categories">
                <a href="/categories/index.html">
                  <span class="site-state-item-count">12</span>
                  <span class="site-state-item-name">分类</span>
                </a>
              </div>
            

            
              
              
              <div class="site-state-item site-state-tags">
                <a href="/tags/index.html">
                  <span class="site-state-item-count">28</span>
                  <span class="site-state-item-name">标签</span>
                </a>
              </div>
            

          </nav>

          
            <div class="feed-link motion-element">
              <a href="/atom.xml" rel="alternate">
                <i class="fa fa-rss"></i>
                RSS
              </a>
            </div>
          

          
            <div class="links-of-author motion-element">
                
                  <span class="links-of-author-item">
                    <a href="https://github.com/keyarea" target="_blank" title="GitHub">
                      
                        <i class="fa fa-fw fa-github"></i>GitHub</a>
                  </span>
                
                  <span class="links-of-author-item">
                    <a href="mailto:wxkayle@gmail.com" target="_blank" title="E-Mail">
                      
                        <i class="fa fa-fw fa-envelope"></i>E-Mail</a>
                  </span>
                
            </div>
          

          
          

          
          

          

        </div>
      </section>

      
      <!--noindex-->
        <section class="post-toc-wrap motion-element sidebar-panel sidebar-panel-active">
          <div class="post-toc">

            
              
            

            
              <div class="post-toc-content"><ol class="nav"><li class="nav-item nav-level-1"><a class="nav-link" href="#活动是什么"><span class="nav-number">1.</span> <span class="nav-text">活动是什么</span></a></li><li class="nav-item nav-level-1"><a class="nav-link" href="#活动的基本用法"><span class="nav-number">2.</span> <span class="nav-text">活动的基本用法</span></a><ol class="nav-child"><li class="nav-item nav-level-2"><a class="nav-link" href="#活动的创建"><span class="nav-number">2.1.</span> <span class="nav-text">活动的创建</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#创建和加载布局"><span class="nav-number">2.2.</span> <span class="nav-text">创建和加载布局</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#在AndroidMainifest文件中注册"><span class="nav-number">2.3.</span> <span class="nav-text">在AndroidMainifest文件中注册</span></a></li></ol></li></ol></div>
            

          </div>
        </section>
      <!--/noindex-->
      

      

    </div>
  </aside>


        
      </div>
    </main>

    <footer id="footer" class="footer">
      <div class="footer-inner">
        <div class="copyright">&copy; 2018 &mdash; <span itemprop="copyrightYear">2020</span>
  <span class="with-love">
    <i class="fa fa-snowflake-o"></i>
  </span>
  <span class="author" itemprop="copyrightHolder">Key</span>

  
    <span class="post-meta-divider">|</span>
    <span class="post-meta-item-icon">
      <i class="fa fa-area-chart"></i>
    </span>
    
      <span class="post-meta-item-text">Site words total count&#58;</span>
    
    <span title="Site words total count">190.8k</span>
  
</div>


  <div class="powered-by">由 <a class="theme-link" target="_blank" href="https://hexo.io">Hexo</a> 强力驱动</div>



  <span class="post-meta-divider">|</span>



  <div class="theme-info">主题 &mdash; <a class="theme-link" target="_blank" href="https://github.com/iissnan/hexo-theme-next">NexT.Mist</a> v5.1.4</div>




        







        
      </div>
    </footer>

    
      <div class="back-to-top">
        <i class="fa fa-arrow-up"></i>
        
      </div>
    

    

  </div>

  

<script type="text/javascript">
  if (Object.prototype.toString.call(window.Promise) !== '[object Function]') {
    window.Promise = null;
  }
</script>









  


  











  
  
    <script type="text/javascript" src="/lib/jquery/index.js?v=2.1.3"></script>
  

  
  
    <script type="text/javascript" src="/lib/fastclick/lib/fastclick.min.js?v=1.0.6"></script>
  

  
  
    <script type="text/javascript" src="/lib/jquery_lazyload/jquery.lazyload.js?v=1.9.7"></script>
  

  
  
    <script type="text/javascript" src="/lib/velocity/velocity.min.js?v=1.2.1"></script>
  

  
  
    <script type="text/javascript" src="/lib/velocity/velocity.ui.min.js?v=1.2.1"></script>
  

  
  
    <script type="text/javascript" src="/lib/fancybox/source/jquery.fancybox.pack.js?v=2.1.5"></script>
  

  
  
    <script type="text/javascript" src="/lib/canvas-nest/canvas-nest.min.js"></script>
  


  


  <script type="text/javascript" src="/js/src/utils.js?v=5.1.4"></script>

  <script type="text/javascript" src="/js/src/motion.js?v=5.1.4"></script>



  
  

  
  <script type="text/javascript" src="/js/src/scrollspy.js?v=5.1.4"></script>
<script type="text/javascript" src="/js/src/post-details.js?v=5.1.4"></script>



  


  <script type="text/javascript" src="/js/src/bootstrap.js?v=5.1.4"></script>



  


  




	





  





  












  





  

  

  

  
  

  

  

  

</body>
</html>
